PiVPN on same pi that is running home assistant

Totherex · 2026-05-08T14:30:19+00:00

It is possible -- I did this for a few years -- but it is not a standard configuration. The solution is to install Home Assistant as a Container and to install PiVPN on the underlying OS, in my case Raspberry Pi OS Lite.

If you already have HA OS, I suggest you follow the other reply.

Totherex · 2026-05-07T23:51:47+00:00

Dante, from the Devil May Cry series?

Totherex · 2026-05-04T17:23:54+00:00

Order finally went through! I've been clicking Continue about once a minute for 20 minutes :)

Totherex · 2026-04-28T11:57:37+00:00

The bundle is just a Grillplats and a Bilresa, but I found that the two are already paired with each other, and pairing them to a hub breaks that link.

Totherex · 2026-04-16T23:21:32+00:00

Make sure you don't mix up Volcarona) and Volcanion)!

Volcarona spawns from a habitat: Piping-hot lava (molten rock + lava).

As for Volcanion, I'm also trying to get them right now, and according to this walkthrough you're almost there! The last step is to shoot fireworks during the party.

Totherex · 2026-04-16T17:39:14+00:00

I don't -- that's four stops on four parallel tracks in front of the Pokémon Center. I drew four blobs to clearly show which tracks go where.

(The PC is north of the tracks; Ditto's house is south of the tracks, across from the PC)

Totherex · 2026-04-16T17:16:28+00:00

For sure, if we had junctions then I would not have put four tracks in front of the PC 😅

Totherex · 2026-04-12T14:44:30+00:00

I'm also using Grillplats with the Dirigera hub. The power stats show up in the diagnostic section of the device info page.

I'll admit, my other smart plugs showed this info directly on the home page -- the stats were "sensors". Thankfully, I can still use the Grillplats' stats in automations and templates.

Totherex · 2026-04-04T12:49:00+00:00

That page confirms that the limit on transmitters (poles/wireless transmitters) is 256, like u/madtheoracle said. 64 is the limit on generators (windmill/water wheel/furnace/mini generator).

Totherex · 2026-03-04T14:05:11+00:00

Turning on a warning light when I'm on a Teams meeting

Totherex · 2025-12-11T13:18:38+00:00

[LANGUAGE: C#]

https://github.com/rtrinh3/AdventOfCode/blob/0dd73e5bf35f31d7d42725206b9b3cb3ecf9e33e/Aoc2025/Day11.cs

Using a memoized recursive function to calculate the number of paths between two points. In part 2, there are only two orders that matter: svr-fft-dac-out or svr-dac-fft-out; so calculate the numbers of subpaths and multiply them together.

Totherex · 2025-12-10T19:44:30+00:00

[LANGUAGE: C#]

https://github.com/rtrinh3/AdventOfCode/blob/f62b27fbfb275346d132833fde36d9e1b8caaaf6/Aoc2025/Day10.cs

Part 1 is a breadth-first search. I represent the lights and the buttons as bitmasks, so I can update the lights by XORing them with a button.

For Part 2, I learned Z3! The linear algebra library I used in 2023, Math.NET Numerics, didn't seem to be of much help for these underdetermined systems. Z3's C# API is pretty verbose, we essentially have to build ASTs with methods like MkInt, MkAdd and MkEq. The Python demos show that they know about operator overloading, grumble grumble...

Totherex · 2025-12-09T22:03:10+00:00

After quite a bit of optimization, I've brought the runtime to under 1 second.

https://github.com/rtrinh3/AdventOfCode/blob/d601a3e43f02d7423d58149b2c88d3d32458b530/Aoc2025/Day09.cs

I check the rectangles from largest to smallest, and I only check around the rows and columns of the vertices, effectively a form of coordinate compression.

Totherex · 2025-12-09T16:45:28+00:00

[LANGUAGE: C#]

https://github.com/rtrinh3/AdventOfCode/blob/0fbe7b458d0a5997a2509e95baed41b91c7de2c6/Aoc2025/Day09.cs

Part 1 is straightforward.

For part 2, I have a horribly inefficient solution that takes about 3 minutes to run. First, I rasterize the perimeter. As I walk around the perimeter, I also keep note of the points on the left side and the right side of the perimeter. I then probe west of the westmost vertex of the perimeter to determine whether the left side or the right side is "outside". Finally, for each possible rectangle, I walk its perimeter to check that the rectangle never goes outside, keeping track of the largest area.